kvm: x86: set wall_clock in kvm_write_wall_clock()

Small change to avoid meaningless duplication in the subsequent patch.
No functional change intended.

Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Change-Id: I77ab9cdad239790766b7a49d5cbae5e57a3005ea
Message-Id: <20200818152429.1923996-3-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/x86.c

@@ -1916,6 +1916,8 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock)
 	struct pvclock_wall_clock wc;
 	u64 wall_nsec;
 
+	kvm->arch.wall_clock = wall_clock;
+
 	if (!wall_clock)
 		return;
 
@@ -3117,7 +3119,6 @@ int kvm_set_msr_common(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
 		break;
 	case MSR_KVM_WALL_CLOCK_NEW:
 	case MSR_KVM_WALL_CLOCK:
-		vcpu->kvm->arch.wall_clock = data;
 		kvm_write_wall_clock(vcpu->kvm, data);
 		break;
 	case MSR_KVM_SYSTEM_TIME_NEW: